ZODIAC rare, screwed down intermediate wheel chronograph Sea-Chron with calibre Valjoux 726, manual winding, Switzerland around 1965, reference 872 840, stainless steel case including original bracelet, screwed down case back, black contrast dial with silvered sub- dials , bidirectional revolving bezel, display of hours, minutes, constant second & chronograph, 17 jewels , calibre 87 (Valjoux 726), diameter approx. 39 mm, length approx. 20 cm, original box & service receipt in copy from May 2019 enclosed, condition 2, from the collection of the first owner